Engraving-machine for glass



Nu. 6|2,978. Patented Oct. 25, |898. H. C. SCHRADER.

ENGRAVING MAcHmE For: GLASS.

(Application led Feb. 12, 1898.) (No Model.) 2 Sheets-Sheet I.

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Henry Y6/m27 Patented Oct. 25, |898 `H. C. CHRADER. ENGRAVING MACHINE FDR GLASS.

( No Model.)

(Application filed Feb. 12, 1898.)

2 Sheets-Sheet 2.

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NTTED STATES PATENT Ormes.

'HENRY C. SCHRADER, OF MOUNT PLEASANT, PENNSYLVANIA.

ENGRAVlNG-MACHINE FOR GLASS.

SPECIFICATION forming part of Letters BatentNo. 612,978, dated October 25, 1898.

Application tiled February 12, 1898. Serial No. 670,118. (No model.) l

T0 all whom it may concern:

Be it known that I, HENRY C. SCHRADER, a citizen ofthe United States, residing at Mount Pleasant, in the county of Westmoreland, State of Pennsylvania, have invented certain new and useful Improvements in Glass-Engraving Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates tovglass-engraving machines, and more particularly to an apparatus adapted to engrave a number of glasses at the same time.

The invention has for its object to produce a simple and efficient structure for etching or engraving irregular figures upon a series of glasses, and, further, to provide an improved construction of parts by means of which the motion imparted to a tracer-arm will be transferred to an engraving-needle, so that the design carried by the pattern-holder will be reproduced upon a reduced scale on the article to be engraved. l

The invention also has for its object to provide an improved means for supporting the needles and for holding and rotating the article to be engraved.

Other objects and advantages of the invention will hereinafter appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, Figure l is a front view of the machine. Fig. 2 is a plan of the same with parts broken away. Fig. 3 is a vertical cross-section on the line 3 3 of Fig. l, and Fig. a is a detail illustration of the driving means for simultaneously rotating the pattern and articles to be engraved.

Like letters of reference indicate like parts throughout the several figures of the drawings.

The letters A A represent opposite standards located at each end of the apparatus. The upper ends ot' the standards are provided with lugs A', upon which rests the upper portion of the pivoted needle-carrying frame B, which oscillates upon an axis at a right angle to the axis of the table upon which the work is supported. This frame is provided with a cross-bar B', through the opposite ends of which pass screws B2, adapted to be adjusted vertically and to form a pivotal support for the needle-frame B. At the lower portion of this frame aneedle-plate B3 is provided, upon which the several needles C are mounted so as to reciprocate vertically. These needles are suitably supported within a guide-plate C and at their lower ends are adapted to rest upon the article to be engraved. The needles may at any time be withdrawn from contact with the article G by a lever C2, suitably supported upon the plate B3 by means of bearings C8 and connected to the needles by a tlexible connection C4, extending from an eye C5 upon the needle to an arm C, carried by the rod C2. handle of this rod is thrown so as to carry the arms C6 into a vertical position the sev eral needles will be withdrawn from the article G, which is being operated upon.

The glass G or other article to be engraved is supported by a holding-plate A2, within which there is seated a series oi' rotating work-tables or mandrels D, provided with suitable centering projections D', between which the Work is held. This table D is pro vided with a stem D2, which rotates in a socket formed in the plate A2, and the stem may be longitudinally adjusted by means of a set-screw D3, passing through the end of the holder A2. The lower portion of the holding-plate is provided with an extension A3, within which a supporting-arm E is adjustably held by means of a set-screw E. The upper end of this arm is provided with lateral projections E2, through the ends of which a clamping-bolt E3 passes. This bolt is nor'- mally held in contact with the article to be engraved by means of a spring e, located between a set-collar e and one of the arms E2. The article G when centered within the pins D' will be held by the clamping-bolt E3 with a constant pressure during the engraving operation, this pressure being suiicien-t to cause the rotation of the glass with the table D by means of the frictional contact between the parts.

At one end of the machine an extension A4 is provided having a bearing-box A5, within which rests a journal F, carrying at its outer end the pattern-holder F. This holder is a hollow cylinder and is clamped against the disk F2, secured to theshaft F,by means of It will be obvious that when the IOO a thumb-nut F3, threaded upon the end Aof the shaft and bearing against a plate or bar f, which at opposite points rests upon in- Wardly-projecting lugs f upon the inner surface of the pattern-holder. The pattern G may be applied to the carrier F by any suitable means. It may be placed thereon and traced by the operator or may be form ed with depressed lines to guide the operator in tracing the same. The shaft F is provided With a driving-pulleyf2, which is driven simultaneously with the rotation of the glasses by any suitable means-for instance, a ne endless steel Wire H, which passes around the grooved periphery of each of the series of Work-tables and around the driving-pulley Fcarried by the shaft F. This belt or band may be driven by any suitable meansfor instance, power applied to a pulley H', located at one end of the machine and around which the band H Will pass. In order to maintain this belt or band in a taut`condition, there is provided a slackadjusting roller H2, suitably supported upon the eXtension .Att from the frame A. This roller is journaled upon a rod H3, suitably mounted in lugs h and normally held in an ext-ended position by means of a spring H3, bearing against a set-collar h'.

The apparatus heretofore described provides for a rotary movement of the glasses in unison with the movement imparted to the pattern. It noW remains to impart an oscillatory movement to the needle-holding plate and the needles carried thereby, in order that this movementin connection with the rotary movement of the glasses may enable the operator to trace any desired curve or outline upon the glass. This is accomplished by means of a swinging tracer-arm I, suitably pivoted at one end between the projecting arms A6 by means of pivotingscrews I. The opposite end of this arm is provided with a tracing point or pencil I2, held yieldingly in contact With the pattern by means of the spring I3. The tracer-arm carries a downward ly-projectin g arm I4, which is connected by means of a bar I5 With a projection B4, ext-ending from the oscillating needle-frame B. This member B4 is connected with the frame B by means of Webs or lateral projections B5. The inner end of the connecting-bar I5 is provided with a series of adjusting-holes I6, by means of which the member B.4 may be connected at different points upon the bar, and thus the position of the needle is adjusted in relation to an edge of the glass to Work upon different portions thereof.

In the foregoing description it Will be seen that a series of glasses are secured to the rotating tables D by means of the clampingbolts E3 and a suitable design placed upon the pattern-holder F. Power then being applied to the belt H the series of glasses are rotated in the same direction and simultaneously with each other and in unison with the movement imparted to the pattern. The operator then traces upon the pattern the design to be engraved upon the glasses, the oscillatory movement of such tracing operation being transferred through the arm I, bar I5, and extension B4 to the needle carried by the frame B, which frame and needle travel in a path parallel with the aXis of the Work-table. Thus the needle is oscillated during the rotating movement of the article engraved, and the combined eect of these two movements is to produce the design carried upon the patternholder and traced thereon by the arm I. It Will be observed that if the needle were oscillated Without the rotation of the glass a straight line Would be etched longitudinally of the glass; likewise if the glass be rotated and the needle not oscillated the result would be a circumferential straight line upon the glass; but when the glass is rotated and the needle oscillated simultaneously therewith the desired curvature Will be given to the line of travel traversed by the needle. Those familiar with this art will clearly understand that When separate figures are to be engraved a series of operations will be required, but when an interlaced design or border is engraved circumferentially of the glass the entire operation may be performed in the continuous rotation ofthe pattern-holder. Vhen the engraving operation has been completed, the needles are all simultaneously raised out of contact With the glass by means of the lever C2, as heretofore described.

It is obvious that numerous changes may be made in the details of construction and configuration of the several parts Without departing from the spirit of the invention as defined by the appended claims.

Having described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. In a glass-engraving machine, the com` bination With a rotatable work-table and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an aXis at a right angle to the aXis of the Work-table, a continuously-rotated pattern-holder, and a pivoted tracer-arm connected to said frame and traversing said pattern-holder; substantially as specified.

2. In a glass-engraving machine, the combination With a rotatable Work-table and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis of the Work-table, a continuously-rotated pattern-holder, a pivoted tracer-arm connected to said frame and traversing said patternholder, and an adjustable connection between said tracer-arm and frame; substantially as speciied.

3. In a glass-engraving machine, the combination with a rotatable Work -table and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis IOO IIO

of the Work-table, a continuously-rotated pattern-holder, a pivoted tracer-arm connected to said frame and traversing said patternholder, and means for rotating said pattern in unison With said Work-table substantially as specified.

4. In a glass-engraving machine, the combination with a rotatable Work table and means for rotating the same, of a frame carrying a needle-plate and mounted to oscillate upon an axis at a right angle to the axis of said table, a pivoted tracer-arm connected to said frame, a pattern adapted to rotate in unison With said Work-table, a needle-adj uster comprising a rotatable shaft provided with a lever-arm, and a flexible connection between said arm and a needle; substantially as specified.

5. In a glass-engraving machine, the combination with a rotatable worktable and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis of the Work-table, a continuously-rotated pattern-holder, an adjustably-mounted clamping device to support an article upon said table and provided with an arm held in a socket in the table-supporting frame, and an independently-pivoted tracer-arm and connections for moving said frame; substantially as specified.

6. In a glass-engraving machine, the combination with a rotatable Work-table and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis of the Work-table, a continuously-rotated pattern-holder, a pivoted tracer-arm connected to said frame and traversing said patternholder, a clamping device to support an article upon said table, and a bar extending from said tracer-arm to said frame; substantially as specified.

7. In a glass-engraving machine, the combination with a rotatable Work table and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis of the Work-table, a continuously-rotated pattern-holder, a pivoted tracer-arm connected to said frame and traversing said patternholder, a clamping device to support an article upon said table, a bar extending from said tracer-arm to said frame; and means for rotating said pattern-holder in unison with said Work-table; substantially as specified.

8. In a glass-engraving machine, the combination with a rotatable `Work -table-and means for continuously rotating thesalne, of a frame carrying a needle-plate and oscillating upon an axis at af right angle to the axis of the Work-table, a continuously-rotated patternholder,.a pivoted tracer-arm connected to said frame and traversing said patternholder, a clamping device to support an article upon said table, a bar extending from said tracer-arm to said frame, and a continuous driving-belt to simultaneously rotate said Work-table and pattern-holder; substantially as specified.

9. In a glass-engraving machine, the combination with a rotatable Work table and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis of the Work-table, a continuously-rotated pattern-holder, a pivoted tracer-arm connected to said frame and traversing said patternholder, a clamping device to support an article upon said table1 abar extending from said tracer-arm to said frame, a continuous driving-belt to simultaneously rotate said Worktable and pattern-holder, and means for elevating a needle from contact with the Work; substantially as specified.

10. In a glass-engraving machine, the combination With a rotatable Worktable and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis of the Work-table, a continuously-rotated pattern-holder, a pivoted tracer-arm connected to said frame and traversing said patternholder, a clamping device to support an article upon said table, a bar extending from said tracer-arm to said frame, and a single device for simultaneously rotatingsaid pattern-holder and Work-table; rsubstantially as specified.

1I. In a glass-engraving machine, the com- -bination with a rotatable Work-table and means for continuously rotating the same, ot a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis of the Work-table, a continuously-rotated pat- IOO tern-holder, a pivoted tracer-arm connected y to said frame and traversing said patternholder, a clamping device to support an article upon said table, a bar extending from said tracer-arm to said frame, and an endless driving-belt engaging pulleys carried by the pattern-holder and Work-table to drive each in the same direction; substantially as specifled.

l2. In a glass-engraving machine, the combination with a rotatable Work table and means for continuously rotating the same, of a frame carrying a needle-plate and oscillating upon an axis at a right angle to the axis of the Work-table, a continuously-rotated pattern-holder, a pivoted tracer-arm connected to said frame and traversing said patternholder, a clamping device to support an article upon said table, a bar extending from said tracerarm to said frame, an endless driving-belt engaging pulleys carried by the pattern-holder and Work-table to drive each in the same direction, and a slack-adjusting device adapted to act upon said belt; substantially as specified.

13. In a glass-engraving machine, the combination With a rotatable Work table and means for continuously rotatingthe same, of a frame carrying a needle-plate and oscillat- IIO IIS

ing upon an axis at a right angle tothe axis of the Work-table, a continuously-rotated pattern-holder, a pivoted tracer-arm connected to said frame and traversing said patternholder, a holding-plate upon which said Worktable is mounted, an adjustable supportingarm held in said plate and provided with lateral projections, and a spring-actuated clam ping-bolt mounted in said projections and adapted to engage and hold an article upon said table; substantially as specied.

14E. In a glass-engraving machine, a shaft provided With a driving-pulley, a disk secured upon said shaft, aliolloW pattern-holder provided With internal projections, and means engaging said shaft and projections for clamping the pattern-holder into contact with said disk; substantially as specified. l5. In a glass-engraving machine, the cornbination with a support, of a series of rotatable Work-tables supported therein, means for holding the Work upon said tables, apatternholder rotatably supported, a pivoted oscillating frame, a needle-plate mounted thereon, a depending arm from said frame, a pivoted tracer-arm, adjustable means for connecting said tracer-arm With the depending arm from said frame, and means for continuously and simultaneously rotating said pattern-holder and Work-tables; substantially as specified.

16. In a glass-engraving machine, the coinbination With a support, of a series of rotatable Work-tables supported therein, means for holding the Work upon said tables, a patternholder rotatably supported, a pivoted oscillating frame, aneedle-plate mounted thereon, a depending arm from said frame, a pivoted tracer-arm, adjustable means for connecting said tracer-arm with the depending arm from said frame, means for continuously and simultaneously rotating said pattern-holder and Work-tables, a series of needles above said Work-tables, and means for elevating and supporting said needles above the Work carried by the tables; substantially as specified.

In testimony whereof I affix my signature in presence of tWo Witnesses.

HENRY C. SCHRADER.

Witnesses:

J. W. FAUsT, Jr., JNO. D. MCCALEB. 

